. Author manuscript; available in PMC: 2013 Nov 25.

Published in final edited form as: IEEE Trans Med Imaging. 2005 Jun;24(6):10.1109/TMI.2005.848373. doi: 10.1109/TMI.2005.848373

TABLE I.

Target Registration Errors According for Rigid-Body Tracking Experiments Outlined in Fig. 7.

Experiment Type	Mean RMS FRE	Mean RMS TRE
Experiment Type	n=number of poses examined

a: varying extents	0.62±0.10 (n=4)	0.95±0.22 (n=12)
b: varying phantom position	0.74±0.23 (n=4)	1.63±0.49 (n=12)
c: focused extents, varying phantom position	0.57±0.05 (n=4)	1.20±0.32 (n=12)
d: varying camera position	0.54±0.04 (n=3)	1.29±0.44 (n=6)
e: varying camera and phantom position	0.79±0.08 (n=4)	0.94±0.14 (n=12)

n Indicates the Number of LRS and OPTOTRAK Acquisitions Used to Generate the Mean Value Reported. The Mean rms FRE Describes the Accuracy With Which the Calibration Between Physical-Space and LRS Was Generated. The Mean rms TRE Represents the Tracking Accuracy of Targets Acquired by the LRS and OPTOTRAK Independently of the Calibration Scans